Hello, I am new to Freeswitch and wanted some input on how best to achieve the below scenario. 1. A and B are in a call. 2. A adds user C to the call. - At this point user A and B are added to a dynamically created conf and C is added as well. 3 A adds user D to the call. D is added to the conf. The fact that step 2 is a conf call and users C and D are provisioned and available to the FS. I am using FS_CURL so the PHP has access to the DB. I know how to add A,B,C and D directly into a conference using mod_conference. I made it work. However, I don't understand how I can access an existing call i.e between A and B and turn that into a conference. and also I guess the original call should be hungup when B accepts the conf invite. Is there a way to do this in the dial-plan ? i.e when A calls C, the PHP knows that this is a conf call, how do I kill the old call though. I guess I can use the uuid of the previous call, I don't know what to issue to hang up the first call. My clients are webrtc based and currently they don't natively support either hold/resume or transfer(using refer). They do however support multiple calls from/to the same user at the same time. i.e 2 lines. I guess both will be active. Thank you. Any help would be greatly appreciated!! -Shaks.